Whelen Liberty Single Module Out

[jclendenen]

I'm looking for help with my 2011 Liberty. Recently, one of the modules began to appear to dim out while the rest of the bar was working properly. I just figured the module itself went bad, so I ordered a replacement. When I went to replace the module and plugged in the new one, it also was doing the same thing which leads me to suspect a wiring or electronics issue. The module is the passenger rear inboard module, the driver side is working fine. Anyone have any idea what is causing just the one module to not work?

Thanks

 

[shues]

You should be able to open the bar and swap the wiring harness for the six front lightheads with the wiring harness for the six rear lightheads. If the problem follows the wiring harness to the other half of the bar, then you know the wiring is to blame. Otherwise the board is to blame.